How do I create a Wikidata SPARQL query to return the top 10 US companies and their directors based on revenue? - sparql

Question

Here is the query I am working with:
SELECT DISTINCT ?item ?itemLabel ?rev ?date (group_concat(distinct ?directorLabel ; separator = ", ") as ?directors)
WHERE {
?item wdt:P31/wdt:P279* wd:Q4830453 ;
wdt:P17 wd:Q30 .
?item p:P2139 ?revSt .
?revSt pq:P585 ?date.
FILTER ( YEAR(?date) = 2020 ).
?revSt ps:P2139 ?rev .
?item p:P3320 ?relationship.
?relationship ps:P3320 ?director.
#Filter Director by no end date
FILTER NOT EXISTS {?relationship pq:P582 ?end.}
#Group directors
SERVICE wikibase:label {
bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
?director rdfs:label ?directorLabel .
?item rdfs:label ?itemLabel .
}
}
GROUP BY ?item ?itemLabel
ORDER BY DESC(?rev)
LIMIT 10
This query is a bad aggregate, if I add more variables to the GROUP BY clause it times out. Ultimately I would like to aggregate the wdt ids for all the directors too.

Answer 1

SELECT DISTINCT
?item ?itemLabel ?rev ?date
(group_concat(distinct ?directorLabel ; separator = ", ") as ?directors)
WHERE {
?item wdt:P31/wdt:P279* wd:Q4830453 ;
wdt:P17 wd:Q30 .
?item p:P2139 ?revSt .
?revSt pq:P585 ?date.
hint:Prior hint:rangeSafe "true" .
FILTER ( YEAR(?date) = 2020 ).
?revSt ps:P2139 ?rev .
?item p:P3320 ?relationship.
?relationship ps:P3320 ?director.
FILTER NOT EXISTS {?relationship pq:P582 ?end.}
SERVICE wikibase:label {
bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
?director rdfs:label ?directorLabel .
?item rdfs:label ?itemLabel .
}
}
GROUP BY ?item ?itemLabel ?rev ?date
ORDER BY DESC(?rev)
LIMIT 10